Solutions Engineer - lago

At Lago, we're on a mission to make Monetization simpler for tech companies.

As the leading open-source billing platform, we help businesses build flexible pricing models and scale with confidence. We've raised over $22 million in funding from top-tier investors including Y Combinator and FirstMark.

Our platform has garnered around 10K stars on GitHub, a testament to our active and growing developer community. Companies such as PayPal, CoreWeave, Synthesia, and Mistral.ai http://Mistral.ai choose Lago for their billing. And we have barely spent any money on Marketing or Ads so far.

We're a team of ambitious, focused individuals who solve hard problems with excellence and accountability. At Lago, we value reliability and proactivity. We trust each other to own tasks, drive them to completion, and continuously improve them. While we encourage you to try fast and “fail fast”, we also expect you to learn fast: make mistakes, but don't make the same one twice.

If you're excited by challenges and want to grow alongside a high-performing, supportive team, this is the place for you.

OVERVIEW

We're hiring a Solutions Engineer in Europe to be the technical backbone of our GTM motion — from first demo to successful go-live and beyond.

This is a dual-focus role: pre-sales first, where you help prospects evaluate and understand Lago deeply, and post-sales second, where you ensure the customers who sign with us get to production and see value. You will work directly with our AE team, co-founders, and product to shape deals and guide implementations.

This isn't a classic SE role where you polish the same demo script for every prospect. Every billing architecture is different, every contract is custom, and every customer has gaps you'll need to bridge creatively. You'll need to go deep — technically and commercially — to help prospects understand what's possible in Lago and translate that into real, working configurations.

You'll be joining a small, high-ownership team and working alongside people who already set the standard for what great looks like in this function at Lago.

WHAT YOU'LL BE DOING

Pre-sales (primary focus)

• Run technical discovery calls to understand prospects' pricing models, billing infrastructure, and integration

requirements

• Lead and own product demos — building bespoke demo environments tailored to each prospect's use cases, not off-the-shelf scripts
• Manage technical evaluations and cloud trials end-to-end: configure demo data, set up trial environments, run technical workshops, and stay close to the prospect throughout
• Write clear, honest deal debriefs that capture what landed, what's at risk, and what actions are needed — shared with the AE and founder team